Boron cannot form which one of the following anions?
(1) BO2-
(2) BF63-
(3) BH4-
(4) B(OH)4-
Due to absence of low lying vacant d orbital in B, sp3d2hybridization is not possible hence BF63-will not formed.
Which of the following is applied on the top of the matchsticks?
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Which of the following is an example of thermosetting plastic?
Which of the following can be beaten and converted into thin sheets?
What is the process of melting also called?
In an acid base reaction which product is produced along with a salt?
Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of ice- creams and jellies?
What is the reaction between an acid and a base called?
Magnesium (Mg) + Oxygen (O2) = ?
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